block.c (cbf1dff2f1033cadcb15c0ffc9c0a3d039d8ed42) block.c (b50cbabc1bc12e6b0082089c70015c1b97db86a1)
1/*
2 * QEMU System Emulator block driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights

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51static BlockDriverAIOCB *bdrv_aio_flush_em(BlockDriverState *bs,
52 BlockDriverCompletionFunc *cb, void *opaque);
53static BlockDriverAIOCB *bdrv_aio_noop_em(BlockDriverState *bs,
54 BlockDriverCompletionFunc *cb, void *opaque);
55static int bdrv_read_em(BlockDriverState *bs, int64_t sector_num,
56 uint8_t *buf, int nb_sectors);
57static int bdrv_write_em(BlockDriverState *bs, int64_t sector_num,
58 const uint8_t *buf, int nb_sectors);
1/*
2 * QEMU System Emulator block driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights

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51static BlockDriverAIOCB *bdrv_aio_flush_em(BlockDriverState *bs,
52 BlockDriverCompletionFunc *cb, void *opaque);
53static BlockDriverAIOCB *bdrv_aio_noop_em(BlockDriverState *bs,
54 BlockDriverCompletionFunc *cb, void *opaque);
55static int bdrv_read_em(BlockDriverState *bs, int64_t sector_num,
56 uint8_t *buf, int nb_sectors);
57static int bdrv_write_em(BlockDriverState *bs, int64_t sector_num,
58 const uint8_t *buf, int nb_sectors);
59static BlockDriver *find_protocol(const char *filename);
60
61static QTAILQ_HEAD(, BlockDriverState) bdrv_states =
62 QTAILQ_HEAD_INITIALIZER(bdrv_states);
63
64static QLIST_HEAD(, BlockDriver) bdrv_drivers =
65 QLIST_HEAD_INITIALIZER(bdrv_drivers);
66
67/* If non-zero, use only whitelisted block drivers */

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205
206 return drv->bdrv_create(filename, options);
207}
208
209int bdrv_create_file(const char* filename, QEMUOptionParameter *options)
210{
211 BlockDriver *drv;
212
59
60static QTAILQ_HEAD(, BlockDriverState) bdrv_states =
61 QTAILQ_HEAD_INITIALIZER(bdrv_states);
62
63static QLIST_HEAD(, BlockDriver) bdrv_drivers =
64 QLIST_HEAD_INITIALIZER(bdrv_drivers);
65
66/* If non-zero, use only whitelisted block drivers */

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204
205 return drv->bdrv_create(filename, options);
206}
207
208int bdrv_create_file(const char* filename, QEMUOptionParameter *options)
209{
210 BlockDriver *drv;
211
213 drv = find_protocol(filename);
212 drv = bdrv_find_protocol(filename);
214 if (drv == NULL) {
215 drv = bdrv_find_format("file");
216 }
217
218 return bdrv_create(drv, filename, options);
219}
220
221#ifdef _WIN32

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278 drv = d;
279 }
280 }
281 }
282
283 return drv;
284}
285
213 if (drv == NULL) {
214 drv = bdrv_find_format("file");
215 }
216
217 return bdrv_create(drv, filename, options);
218}
219
220#ifdef _WIN32

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277 drv = d;
278 }
279 }
280 }
281
282 return drv;
283}
284
286static BlockDriver *find_protocol(const char *filename)
285BlockDriver *bdrv_find_protocol(const char *filename)
287{
288 BlockDriver *drv1;
289 char protocol[128];
290 int len;
291 const char *p;
292 int is_drive;
293
294 /* TODO Drivers without bdrv_file_open must be specified explicitly */

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473 * Opens a file using a protocol (file, host_device, nbd, ...)
474 */
475int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags)
476{
477 BlockDriverState *bs;
478 BlockDriver *drv;
479 int ret;
480
286{
287 BlockDriver *drv1;
288 char protocol[128];
289 int len;
290 const char *p;
291 int is_drive;
292
293 /* TODO Drivers without bdrv_file_open must be specified explicitly */

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472 * Opens a file using a protocol (file, host_device, nbd, ...)
473 */
474int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags)
475{
476 BlockDriverState *bs;
477 BlockDriver *drv;
478 int ret;
479
481 drv = find_protocol(filename);
480 drv = bdrv_find_protocol(filename);
482 if (!drv) {
483 return -ENOENT;
484 }
485
486 bs = bdrv_new("");
487 ret = bdrv_open_common(bs, filename, flags, drv);
488 if (ret < 0) {
489 bdrv_delete(bs);

--- 2018 unchanged lines hidden --- 		481 if (!drv) {
482 return -ENOENT;
483 }
484
485 bs = bdrv_new("");
486 ret = bdrv_open_common(bs, filename, flags, drv);
487 if (ret < 0) {
488 bdrv_delete(bs);

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